1-1-1 Linear Regulator ICs
SI-3000KM Series Surface Mount, Low Current Consumption, Low Dropout Voltage Linear Regulator ICs
■Features
■Absolute Maximum Ratings
(Ta=25°C)
• Compact surface mount package (TO252-5)
Ratings
Parameter
Symbol
SI-3012KM/
3025KM/3033KM
SI-3010KM/3050KM/
3090KM/3120KM
Unit
• Output current: 1.0 A
35*1
V
V
• Low dropout voltage: VDIF ≤ 0.6 V (at IO = 1.0
DC Input Voltage
VIN
Vc
IO
17
A)
Output Control Terminal Voltage
DC Output Current
VIN
1.0
A
• Low current consumption: Iq ≤ 350 µA
(600 µA for SI-3010KM/SI-3050KM/SI-
3090KM/SI-3120KM)
*2
Power Dissipation
PD
1
W
Junction Temperature
Tj
–30 to +125
°C
Storage Temperature
Tstg
θj-a
θj-c
–30 to +125
°C
• Low circuit current at output OFF: Iq (OFF) ≤ 1
µA
Thermal Resistance (Junction to Ambient Air)
Thermal Resistance (Junction to case)
95
6
°C/W
°C/W
• Built-in overcurrent and thermal protection
circuits
*1: A built-in input-overvoltage-protection circuit shuts down the output voltage at the Input Overvoltage Shutdown Voltage
of the electrical characteristics.
*2: When mounted on glass-epoxy board of 900mm2 (copper laminate area 4.3%).
• Output ON/OFF control function
• Compatible with low ESR capacitors (SI-
3012KM/SI-3025KM/SI-3033KM)
■Applications
• Secondary stabilized power supply (local power supply)
■Recommended Operating Conditions
Ratings
SI-3010KM
2.4*2 to 27*1
0 to 1.0
Parameter
Symbol
Unit
SI-3012KM
2.4*2 to 6.0*1
SI-3025KM
2.4*2 to 5*1
SI-3033KM
*2 to 6*1
SI-3050KM
2.4*2 to 17*1
SI-3090KM
*2 to 20*1
SI-3120KM
*2 to 25*1
Input Voltage Range
VIN
IO
V
A
Output Current Range
Operating Ambient Temperature
Operating Junction Temperature
Top
Tj
–30 to +85
–20 to +100
°C
°C
*1: VIN (max) and IO (max) are restricted according to operating conditions due to the relation PD = (VIN-VO) × IO. Please calculate these values referring to the Copper Laminate Area
vs. Power Dissipation data as shown hereinafter.
*2: Refer to the Dropout Voltage parameter.
■Electrical Characteristics 1 (Low Input Voltage type compatible with low ESR output capacitor)
Ratings
Parameter
Symbol
SI-3012KM (Variable type)
typ.
SI-3025KM
typ.
SI-3033KM
typ.
Unit
min.
2.4*1
1.24
max.
1.32
15
min.
*1
max.
2.55
15
min.
*1
max.
3.366
15
Input Voltage
VIN
V
V
Output Voltage
VO (VADJ
)
1.28
2.45
2.50
3.234
3.300
(Reference voltage VADJ for SI-3012KM)
Conditions
∆VOLINE
VIN=3.3V, IO=10mA
VIN=3.3V, IO=10mA
VIN=5V, IO=10mA
Line Regulation
Load Regulation
mV
mV
Conditions
∆VOLOAD
V
IN=3.3 to 8V, I
O
=10mA (V
O
=2.5V)
VIN=3.3 to 8V, IO=10mA
VIN=3.3V, IO=0 to 1A
IO=0.5A
VIN=5 to 10V, IO=10mA
VIN=5V, IO=0 to 1A
IO=0.5A
40
40
0.4
0.6
350
1
50
0.4
0.6
350
1
Conditions
VDIF
VIN=3.3V, IO=0 to 1A (VO=2.5V)
0.4
0.6
350
Conditions
IO=0.5A (VO=2.5V)
IO=1A (VO=2.5V)
Dropout Voltage
V
Conditions
Iq
IO=1A
IO=1A
Quiescent Circuit Current
µA
µA
Conditions
V
IN=3.3V, I
O
=0A, V
C=2V, R2=24kΩ
VIN=3.3V, IO=0A, VC=2V
VIN=5V, IO=0A, VC=2V
Iq
(
OFF
)
1
Circuit Current at Output OFF
Conditions
∆VO/∆Ta
Conditions
RREJ
VIN=3.3V, VC=0V
VIN=3.3V, VC=0V
±0.3
VIN=5V, VC=0V
±0.3
Temperature Coefficient
of Output Voltage
±0.3
mV/°C
dB
Tj=0 to 100°C (VC=2.5V)
Tj=0 to 100°C
55
Tj=0 to 100°C
55
55
Ripple Rejection
Conditions
IS1
V
IN=3.3V, f=100 to 120H
Z
(V
O
=2.5V)
VIN=3.3V, f=100 to 120HZ
1.1
VIN=5V, f=100 to 120HZ
Overcurrent Protection
Starting Current*2
1.1
1.1
2.0
A
Conditions
VC, IH
VIN=3.3V
VIN=3.3V
VIN=5V
Control Voltage (Output ON)*3
Control Voltage (Output OFF)
2.0
–5
2.0
V
VC, IL
0.8
40
0.8
40
0.8
40
V
C
Control Current
(Output ON)
IC, IH
µA
Terminal
Conditions
IC, IL
VC=2V
0
VC=2V
0
VC=2V
0
Control Current
(Output OFF)
–5
–5
µA
Conditions
VC=0V
VC=0V
VC=0V
*1: Refer to the Dropout Voltage parameter.
*2: IS1 is specified at the 5% drop point of output voltage VO on the condition that VIN=overcurrent protection starting current, IO = 10 mA).
*3: Output is OFF when output control terminal (VC terminal) is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.
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